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Fix macOS pixel format: use ARGB byte order in all raw ScanLine blending

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On macOS Cocoa, TBitmap.pf32bit stores pixels in ARGB order
   (byte0=A, byte1=R, byte2=G, byte3=B) rather than BGRA used on
   Linux/Windows. All raw ScanLine pixel blending and channel mapping
   is now guarded with { DARWIN} to use the correct offsets.

   Also fix PortAudio library discovery on macOS: probe .dylib names
   (including Homebrew paths) before falling through to .so/.dll.
This commit is contained in:
Uladzimir Karpenka
2026-05-28 21:47:54 +03:00
parent 4f127a30ad
commit a02d35fcce
8 changed files with 132 additions and 24 deletions
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SampleRateOverlay.pas
+6
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@@ -98,9 +98,15 @@ begin
Inc(Row, RR.Left * 4);
for X := RR.Left to RR.Right - 1 do
begin
{$IFDEF DARWIN}
Row[1] := Byte((Alpha * R + InvA * Row[1]) div 255);
Row[2] := Byte((Alpha * G + InvA * Row[2]) div 255);
Row[3] := Byte((Alpha * B + InvA * Row[3]) div 255);
{$ELSE}
Row[0] := Byte((Alpha * B + InvA * Row[0]) div 255);
Row[1] := Byte((Alpha * G + InvA * Row[1]) div 255);
Row[2] := Byte((Alpha * R + InvA * Row[2]) div 255);
{$ENDIF}
Inc(Row, 4);
end;
end;